Hello Stefan,You saying co2 issue.
Co2 comes on 4h before lights ..Co2 drops from 6.5 to 5.3 using two co2 reactors.
I'm using a ph controller calibrated each month to just make sure the probe measuring properly.
At the moment the tank light and co2 is off for about 36h so it should be completely degassed and ph is 6.57
So I'm maintaining more than 1 ph drop ..Ph controller is set to ph 5.33 and switching off by ph 5.25 ...
As I said at the top cant go lower. Shrimps acting like crazy all over the tank and wants to jump out.
Thanks for the kind words. Normally, when you have a situation where the animals are stressed by the CO2, yet at the same time the plants suffer CO2 related faults then the problem can be attributed to poor flow/distribution.
Now, you do have a lot of light. That amount of light drives a very high demand for CO2.
Generally, RO water is not good for pH probes or for their accuracy. You may wish to think about adding any carbonate salt in order to raise the KH to about 3-4.
I find it very strange that with two CO2 diffusers it takes 4 hours to drop the pH by 1 unit. This can be due to a low injection rate but can also be due to poor distribution. Is the dropchecker green/yellow at lights on?
It's very difficult to solve distribution problems if you are limited in placing the outflow. There is no such thing as creating a vortex in the tank. That is an illusion, and a terrible one at that, because placing outflows at opposite ends of the tank causes flow cancellation. If you need to add more tubing to be able to mount that one outlet on the same side as the two biomasters it would be worth trying.